The motor is received into the shop and test run. The winding will be tested for possible problems; vibration base lines will be run and recorded. If motor is unable to be run it goes to next step.
The motor will then be disassembled. All parts will be thoroughly cleaned and inspected for electrical or mechanical wear or damage.
If the winding passes all electrical tests, it will be hydro-cleaned, baked dry then dipped and baked in a high temperature "class H" insulating varnish.
The ID of the end bell bearing housings and the OD of both shaft bearing journals are measured to ensure ABMA tolerance and repaired if necessary.
The output shaft will be checked for straightness, condition of the keyway, and proper size and repaired if necessary.
The rotor will be dynamically balanced to meet NEMA tolerances.
The bearings will be replaced with new, high precision, class C-3 bearings. After all the above described work has been completed, the electric motor will be reassembled, painted and test run on its rated voltage to assure proper operation, a final vibration will be run and recorded.
